Lincoln Electric 9SS31648-2 S31648-2 HEX SOCKET PLUG - 1/4 NPT Sale Price: $3.44 Original Price: $3.96 HEX SOCKET PLUG - 1/4 NPT PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Quantity: Add To Cart Added! HEX SOCKET PLUG - 1/4 NPT PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1